Arachnoid Gray Render* (CR 11)

Huge Aberration
Alignment: Neutral Evil
Initiative: +1 (Dex); Senses: scent and Spot +14

AC: 24 (+1 Dex, -2 size, +15 natural ), touch 9, flat-footed 23
Hit Dice: 20d8+180 (267 hp)
Fort +21, Ref +13, Will +13
Speed: 30 ft., climb 20 ft.
Space: 10 ft./10 ft.
Base Attack +15; Grapple +19
Attack: Bite+23 melee and 6 claws +18 melee
Full Attack: Bite+23 melee and 6 claws +18 melee
Damage: Bite 2d8+10 plus poison, 6 claws 1d8+5
Special Attacks/Actions: Improved grab, poison, rend 3d8+15
Abilities: Str 31, Dex 12, Con 28, Int -, Wis 12, Cha 8
Special Qualities: Immunities
Skills: Climb +18, Hide +8, Jump +16, and Spot +14
Climate/Terrain: Underground
Organization: Solitary
Treasure/Possessions: None

Source: City of the Spider Queen

Improved Grab (Ex): If an arachnoid gray render hits a Large or smaller opponent with a bite attack, it deals normal damage and attempts to start a grapple as a free action without provoking an attack of opportunity (grapple bonus +33). If it gets a hold, it can rend on the same round. Thereafter, the creature has the option to conduct the grapple normally, or simply use its jaws to hold the opponent (-20 penalty on grapple check, but the gray render is not considered grappled). In either case, each successful grapple check it makes during successive rounds automatically deals damage from its bite attack.

Poison (Ex): An arachnoid gray render delivers its poison (Fortitude save DC 33) with each successful bite attack. The initial and secondary damage is the same (1d8 points of Strength damage).

Rend (Ex): An arachnoid gray render that gets a hold latches onto the opponent's body and tears the flesh. This attack automatically deals 3d8+15 points of damage.

Immunities: Arachnoid gray renders are immune to all mind-influencing effects (charms, compulsions, phantasms, patterns, and morale effects).

Skills: Arachnoid gray renders receive a +4 racial bonus to Hide checks, a +6 racial bonus to Jump checks, and a +10 racial bonus to Spot checks.

Also see Gray Render.